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Journal Articles Physical Review Letters Year : 2012

N=16 Spherical Shell Closure in O-24

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1
K. Tshoo
  • Function : Author
Y. Satou
  • Function : Author
H. Bhang
  • Function : Author
S. Choi
  • Function : Author
T. Nakamura
  • Function : Author
Y. Kondo
  • Function : Author
S. Deguchi
  • Function : Author
Y. Kawada
  • Function : Author
N. Kobayashi
  • Function : Author
Y. Nakayama
  • Function : Author
K.N. Tanaka
  • Function : Author
N. Tanaka
  • Function : Author
N. Aoi
  • Function : Author
M. Ishihara
  • Function : Author
T. Motobayashi
  • Function : Author
H. Otsu
  • Function : Author
H. Sakurai
S. Takeuchi
  • Function : Author
Y. Togano
  • Function : Author
K. Yoneda
  • Function : Author
Z.H. Li
  • Function : Author
J. Gibelin
F.M. Marqués
  • Function : Author
  • PersonId : 941129
N.A. Orr
  • Function : Author
  • PersonId : 940479
T. Honda
  • Function : Author
M. Matsushita
  • Function : Author
T. Kobayashi
  • Function : Author
Y. Miyashita
  • Function : Author
T. Sumikama
K. Yoshinaga
  • Function : Author
S. Shimoura
  • Function : Author
D. Sohler
T. Zheng
  • Function : Author
Z.X. Cao
  • Function : Author

Abstract

The unbound excited states of the neutron drip-line isotope O-24 have been investigated via the O-24(p, p')O-23 + n reaction in inverse kinematics at a beam energy of 62 MeV/nucleon. The decay energy spectrum of O-24* was reconstructed from the momenta of O-23 and the neutron. The spin parity of the first excited state, observed at E-x = 4.65 +/- 0.14 MeV, was determined to be J(pi) = 2(+) from the angular distribution of the cross section. Higher-lying states were also observed. The quadrupole transition parameter beta(2) of the 2(1)(+) state was deduced, for the first time, to be 0.15 +/- 0.04. The relatively high excitation energy and small beta(2) value are indicative of the N = 16 shell closure in O-24.

Dates and versions

in2p3-01044774 , version 1 (24-07-2014)

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Cite

K. Tshoo, Y. Satou, H. Bhang, S. Choi, T. Nakamura, et al.. N=16 Spherical Shell Closure in O-24. Physical Review Letters, 2012, 109, pp.022501. ⟨10.1103/PhysRevLett.109.022501⟩. ⟨in2p3-01044774⟩
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